Reservoir forming roller device for cloth dyeing and like machines



June 13, 1950 2,511,625

.1. DUNGLER RESERVOIR FORMING ROLLER DEVICE FOR CLOTH DYEING AND LIKE MACHINES Filed Sept. 11, 1946 2 Sheets-Sheet 1 5 F /g.2 10 15a .IN/M/TOR:

aaz/r/rpz/n azm June 13, 1950 J. DUNGLER 2,511,625

REsERvoIR FORMING ROLLER DEVICE FOR CLOTH DYEING AND LIKE MACHINES Filed Sept. 11, 1946 2 Sheets-Sheet 2 2 R I I U 0': Lo l as Q N m m m Ln u Q m x P AW/V/ Patented June 13, lQSG UNITED rec RESERVQZR FGRMING RQLLER DEVKfiE FER CEOTH DYEENG AND LEKE MACHENES .iulien Dungler, Basel, Switzerland 9 Qlaims. l

The invention relates to dyeing devices, which are equipped with pairs of horizontal rollers which are pressed in contact with one another and which form a trough-shaped reservoir above the horizontal contact generatrix of the cylinders of the rollers, said reservoir being adapted for receiving dye or other fluid, semi-fluid or pasty material. It is, therefore, one or the objects of the invention to provide improved dyeing devices of the aforesaid type, in which a pair of rollers are used, for example, for dyeing or dressing fabrics, by feeding the fabric into the troughreservoir from which it issues after having passed through the dye or the dressing material while passing between said horizontal rollers. The invention is also applicable to printing machines, for effecting the feeding of the dye to the engraved roller so that the known device comprising a frame, a dye feed roller and a scraper may be dispensed with.

The difiiculties which are encountered in the construction and operation of a pair of rollers forming said dye reservoir result from, the requirement of providing a liquid-tight surface for the trough reservoir whose boundaries are constituted by the cylindrical surfaces of the rollers.

The invention has for a further object to provide means at the end of the pairs of rollers facilitating a liquid-tight seal which is both simple and eillcient, and associated with the movable shafts of the rollers.

For this purpose, the invention contemplates as a still further object the provision or" a, fiuidtight side plate or flange which is mounted on the shaft of one of the rollers, is of sufiicient size to form a fiat end wall for the trough having otherwise cylindrical side walls, and is pressed, by means of spring, hydraulic or similar device against the corresponding end surfaces of the said rollers.

The invention has also for an object the arrangement of pairs of rollers and grouping of three rollers arranged in a manner to form either two separate trough-reservoirs, placed on either side of a central roller, or a single trough-reservoir between the three rollers.

Embodiments of such devices comprising pairs of rollers forming a trough-reservoir are described hereinafter and diagrammatically illustrated, simply by way of non-limitative examples, in the accompanying drawing in which:

Fig. 1 is an end view of the device embodying the invention,

Fig. 2 is a top plan view of the device of Fig. 1,

Fig. 3 is a plan and a horizontal sectional View of a detail, on a larger scale, showing the means for pressing one or the end plates, the means provided for the other plate being identical,

Fig. 4 is an end view of a group of three rollers,

Fig. 5 is a modified form of the arrangement seen in Fig. 3.

As regards the device of Figs. 1 to 3, l and 2 are rollers with one and the same diameter, whose axes lie in the same horizontal plane and which are pressed in contact with one another by mechanical or hydraulic means. The rollers l and 2 are each provided at one of their ends with a plate or cheek t, forming a liquid-tight seal and sliding with running friction on the shaft by which said check is carried and pressed against the respective races of the rollers by appropriate means. Each of the cheeks 3 is of greater diameter than the rollers I and 2, such that the surface of the cheek bears not only against the end of one of the rollers on the shaft of which it is mounted, but also against a part of the end of the other roller, and that thus each of the cheeks 3 forms a flat end wall for the trough 5- which is formed within the space between the rollers l and 2. In this manner, the device can be used as a reservoir for dye, dressing, or other fluid, semi-fluid or pasty preparation.

The pressure means of each of the cheeks 3 are, in the embodiment illustrated, constituted as follows:

The shaft 5 of the roller is provided with a blind axial bore or hole as, serving as a housing for the pressure exerting structure, which housing includes rectangular radial openings '7, i. The hub 3 of the check 3 is also provided with corresponding radial openings of the same width but shorter length; a key 3 may be lodged in said openings. Said key is subjected to the pressure of a head 9 formed at the end of a stem iii, the said head engaging a slot ii provided in key 8 and being pressed against said key by a helical spring it which bears, on the other hand, against a sleeve it which can slide in the bore 5 by means of ears it engaged in grooves i l of said bore. The sleeve it is tapped so as to form a nut on a screw-threaded rod to which can be operated from the outside by its square head Et thereby enabling the tension of the spring 2 to be adjusted. The rod is is provided with an axial bore so as to accommodate the rod it which terminates in the head 9.

It is possible, by pulling the end of the rod ID to release the key 8 from engagement with the head 9, thereby enabling the key to be withdrawn and the cheek 3 to be removed.

The two rollers are preferably provided with a rubber platen It which extends slightly beyond the end of the metal cylinder, so that liquidtightness is better ensured upon engagement with the cheeks 3.

The fact of providing one of the cheeks 3 on the roller 8 and the other on the roller 2 considerably reduces wear owing to the fact that the platen of each roller wears symmetrically at each end.

It is however possible to provide the two checks ,3 on one and the same roller.

In certaincases, it is possible to interpose, between the cheek 3 and the corresponding roller, a disc ll, of ebonite for example, which is mounted with a running fit, like the cheek 3, on the shaft 5 of the roller.

The improvement according to the invention enables groups of three rollers arranged in accordance with the same principle, to be constructed in a simple manner.

In the assembly of Fig. 4, two rollers 2, '2' are pressed in contact against a central roller l,-the axes of the three rollers being located in a common horizontal plane. The roller I carries, at eachend, a liquid-tight cheek 3 which ispressed simultaneously against the, said roller ,1 and against the rollers 2 and 2"; the diameter of the circular cheek being sufficient to form a liquidtight wall for the trough-reservoirs 4, 4"through which the fabric successively passes.

In the modification illustrated in Fig. 5,itwo rollers '2 and 2' are pressed tangentially against the upper part of the periphery of the roller l which carries at each end a cheek 3 ensuringithe liquid-tightness of the single trough-reservoir 4, the fabric 18 successively passing between the pairs, l2 then 'l'2" with an intermediate devi'a'ting guide-roller l9.

It is of course understood that it is possible, without exceeding the scope of the invention, to imagine changes, improvement of details andthe use of equivalent means.

Having, thus described the invention, what is,

claimed as new and desired to be secured by Letters Patent is:

1. In a device equipped with at least two cylindrical rollers whose peripheries are in pressureengagement with each other along the line of.

contact of the generatrix of said rollers, respectively; means forming a reservoir, said means comprising at least one member engaging the end face of one of said rollers and rotatable with the latter, said member extending, beyond the periphery of said one roller to and for contact with the adjacent end face of the other roller, said member forming a rotatable end wall of said reservoir, and coupling means connecting said member with said one roller.

2. In a bath reservoir forming .device equipped with at least two cylindrical rollers whose peripheries are in pressure-engagement with each other along the line of contact of the generatrlx of .said rollers, respectively, whereby said reservoir is, defined by adjacent, peripheral portions locatedabove said ,generatrix of said rollers and whose shafts are rotated in opposed directions and are arranged spaced apart from each other; flange means arranged in staggered relation to each other and removably attached at opposed shafts for contact with respective end faces of said rollers, said flange means being rotatable together with said rollers and extending beyond the respective roller to the end face, of the adjacent roller, said flange means forming opposed rotatable end walls of, said reservoir, andcoupling,

means'connecting said flange means with the respective shafts of said rollers.

3. ma device equipped with atjle'ast'two cylindrical rollers rotatable in opposed directions and whose peripheries are in pressure-engagement with each other along the line of contact of said rollers; means forming a reservoir, said means comprising at least one member engaging the end face of one of said rollers and rotatable withthe latter, said member extending beyond the periphery of said one roller toward the adjacent end face of the other roller and for contact with the latter, said member forming a rotatable end Wall for said reservoir, adjacent peripheral portions of said rollers above the axes thereof forming opposite side walls of said reservoir, and adjustable means mounted on said one roller and supporting said member for slidable engagement in axial direction against said one roller.

4. In a bath reservoir forming device equipped with at least two cylindrical rollers rotatable in opposed directions and whose peripheries are in pressure-engagement with each other along the line of contact of said rollers, whereby opposite walls of said reservoir are deflned by adjacent peripheral portions of said rollers above the axes thereof; flange means removably attached for contact with the end faces of said rollers, said flange means forming opposed end walls of said reservoir, and spring-actuated means in engagement with said flange means to press the latter against said rollers, respectively, and for rotation therewith.

5. In a device equipped with at least two cylindrical rollers which have each a shaft and which are in fluid-tight engagement with each other along the line of contact; reservoir forming means, said means comprising a check member flitted on the shaft of one of said rollers, a diskshaped liner positioned between said cheek member and the adjacent end face of said one roller and providing a running fit with the latter, said liner extending beyond said end face of said one roller for engagement with the adjacent end face of the other of said rollers, and spring-actuated, adjustable means mounted on said shaft of said one roller and engageable with said cheek member to thereby press the latter together with said liner against said end faces of said rollers for rotation with said one roller and frictional engagement with said other roller, so as to tightly close the reservoir at adjacent end faces of said rollers.

6. In a device according to claim 5, wherein the radius of said disk-shaped liner is larger than the radius of each of said rollers.

7. In a device according to claim 5, wherein saidspring-actuatcd adjustable means is accommodated Within a recess provided in said shaft of said one roller.

8. In a device according to claim '7, wherein said adjustable means includes a member operable from without said shaft of said one roller to. adjust the pressure exerted on said cheek member against said one roller.

9. Ina device according to claim 7, wherein said adjustable means is slidably mountedpn said f shaft of said one roller and relatively to said cheek member.

JULIEN DUNGLER.

REFERENCES CITED The following references are of record in the.

file of this patent:

UNITED STATES PATENTS Number Name Date 1,946g62'7 Karrer Feb. 13,1934

FOREIGN PATENTS Number Country Date 8,288 Great Britain Sept. 7, 1911 

